ATP Parts Z-460 Automatic Transmission Flexplate

Reliable Automatic Transmission Flexplate for GM Vehicles

The ATP Parts Z-460 automatic transmission flexplate is engineered for durability and precise fitment in a range of GM vehicles. Designed specifically for internally balanced engines with a two-piece crank seal, this flexplate ensures smooth power transfer and reliable performance.

• Inside diameter: 2.49 inches
• Outside diameter: 14.125 inches
• 168 teeth for accurate starter engagement
• Mounting hole diameter: 11.25 inches
• Compatible with internally balanced engines featuring a two-piece crank seal
• Fits popular GM models including Chevrolet C10, GMC Sierra, Pontiac Firebird, and Buick LeSabre
• Weight added: No
• Pitch flywheels: 12 to 14

Detailed Specifications and Compatibility

The ATP Parts Z-460 flexplate is designed with a 14.125-inch outside diameter and a 2.49-inch inside diameter, making it suitable for a variety of GM automatic transmissions. With 168 teeth, it provides reliable engagement with the starter motor, reducing wear and ensuring consistent engine starts. The mounting hole diameter of 11.25 inches allows for secure installation on compatible crankshafts. This flexplate is intended for use with internally balanced engines that utilize a two-piece crank seal, a common configuration in many Chevrolet, Buick, GMC, Oldsmobile, and Pontiac models.

Compatible GM Makes and Models

This flexplate is compatible with a wide range of GM vehicles, including but not limited to:

• Chevrolet C10, C20, C30, Camaro, Caprice, El Camino, Impala, Malibu, Monte Carlo, Nova
• GMC C1500, C2500, C3500, Jimmy, K5 Blazer, K10, K20, K30, Sierra
• Buick LeSabre, Century, Regal, Skylark
• Pontiac Firebird, Grand Am, Grand Prix, Catalina, Parisienne
• Oldsmobile Cutlass, Delta 88, 88, 98

Common Applications and Problem Solving

This flexplate addresses several transmission and engine interface issues, including:

• Replacing worn or damaged flexplates to prevent starter engagement problems
• Correct fitment for internally balanced engines with two-piece crank seals
• Resolving vibration issues caused by flexplate imbalance
• Ensuring proper tooth count for starter compatibility
• Maintaining secure mounting to prevent transmission damage

Installation Notes and Tips

When installing the ATP Parts Z-460 flexplate, ensure the engine is internally balanced and uses a two-piece crank seal as specified. Verify the tooth count and mounting hole diameter match your vehicle’s specifications. Use proper torque settings on mounting bolts to avoid warping or loosening. It is recommended to inspect the starter motor and ring gear for wear during installation to ensure optimal performance.

Quality Assurance and Warranty

ATP Parts manufactures the Z-460 flexplate to meet OEM specifications for fit and function. While this flexplate is not SFI approved and does not include an SFI certification sticker, it is built to provide reliable service in compatible GM vehicles. Warranty coverage details should be confirmed with the ATP Parts documentation or distributor.